<!DocType html>
<html>
<head>
<meta charset="UTF-8">
    <title>hello world!</title>
</head>
<body>
<button accesskey="c">Stress reliever</button>
<br>
<a id="顶部" href="hello.html#底部">底部</a>
<h1>hello world!</h1>
<p accesskey="s" tabindex="0" style="padding: 10px; border: 1px solid #ccc;">按下 Alt + S 聚焦此段落。</p>
<p>hello world!</p>
<pre>public static void main(String[] args){
    System.out.println("hello world!");
    }
</pre>

<p>
    <abbr title="Accessible Rich Internet Applications">ARIA</abbr> is essential for creating accessible web content.
</p>

<p>
    The <abbr title="HyperText Markup Language">HTML</abbr> is the standard markup language for creating web pages, and <abbr title="Cascading Style Sheets">CSS</abbr> is used for styling them.
</p>
<abbr title="这就是湘潭大学！">WHO</abbr>

<p>你好<em>你好你好你好</em>你好你好你好<br><b>你好你好<sub>你好你好你好</sub>你好<sup>你好你好</sup>你好你好你</b><br><i>好你好你好你好你好你好你好你好你好你好你好你好你好你好你好</i></p>
<p>你好你好你好你好你好<u>你好你好你好你好你好你好</u>你好你好<del>你好你好你好你好你好你好你好</del>你好你好你好你好你好<mark>你好你好你好你好你好你好你好</mark>你好你好你好你好你好你好你好你好你好你好你好你好你好</p>
<ins datetime="2025-2-28">你好你好你好你好你好你好你好你好你好你好你好你好你好</ins>
<img src="static/1.png" alt="some_text">
<a id="底部" href="https://baidu.com" target="_blank" title="你好">这是百度</a>
<a href="#顶部">顶部</a>
<hr>
</body>
</html>